I know that overseeding in the fall is preferred and we have had great success over the years. As most know we had a horrible drought as well as a crabgrass problem last year so many of our lawns are in pretty bad shape. Many of our customers are wanting us to overseed their lawn this year. Most of these have very large areas where there is almost no regular grass and just leftover dead crabgrass and are now filling in with chickweed, henbit, ect. The question is that i am putting down all our first apps with dimension for crabgrass prevention. I dont know if its more important to get the preemergent down to prevent crabgrass from coming back or to just overseed and then with starter fert and then just spray for weeds later. If i dont seed they may have almost no grass at all and left with huge bare areas. I know fall would be a better time to seed but some of these yards would be almost completely bare all season if we wait. Any suggestions on which route to take?